package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import org.apache.commons.lang.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@RestController
@Slf4j
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {


//      将页面提交的密码password进行md5加密处理, 得到加密后的字符串

        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

//    . 根据页面提交的用户名username查询数据库中员工数据信息

        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(wrapper);
//       如果没有查询到, 则返回登录失败结果
        if (emp == null) {
            return R.error("用户名或密码错误");
        }
//     . 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)) {

            return R.error("用户名或密码错误");
        }
//     . 查看员工状态，如果为已禁用状态，则返回员工已禁用结果

        if (emp.getStatus() == 0) {
            return R.error("该用户状态异常");
        }
//     . 登录成功，将员工id存入Session, 并返回登录成功结果*/
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {


        request.getSession().removeAttribute("employee");
        return R.success("您已退出登录");
    }

    /**
     * 添加员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {

        log.info("员工信息{}", employee.toString());
        //设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//        //创建用户时间
//        employee.setCreateTime(LocalDateTime.now());
//        //更新用户时间
//        employee.setUpdateTime(LocalDateTime.now());
//
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    private R<Page> page(int page, int pageSize, String name) {

        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);

        // A. 构造分页条件
        Page pageInfo = new Page(page, pageSize);

        //B. 构建搜索条件 - name进行模糊匹配
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();
        wrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        //C. 构建排序条件 - 更新时间倒序排序
        wrapper.orderByDesc(Employee::getUpdateTime);
        //D. 执行查询
        employeeService.page(pageInfo, wrapper);
        // E. 组装结果并返回
        return R.success(pageInfo);

    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee byId = employeeService.getById(id);
        return R.success(byId);

    }
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        Long empId = (Long) request.getSession().getAttribute("employee");

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }
}
